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The BOSS XS-1 Poly Shifter delivers instant alternate tunings, harmonized leads, and massive octave textures — all from one compact pedal. With a ±7-semitone and ±3-octave range, intuitive controls, and seamless signal blending, it’s built for players who want creative pitch shifting without sacrificing clarity or feel.

Detune mode adds rich, chorus-like depth, while expression pedal support unlocks smooth real-time pitch sweeps and bends. External footswitch compatibility lets you recall presets or trigger effects instantly during performance. Powered by advanced 24-bit AD/32-bit DA conversion and Adaptive Focus technology, the XS-1 maintains natural tone, clarity, and responsiveness across every setting.

Key Features

• Polyphonic pitch shifting with ±7 semitone and ±3 octave range
• Detune mode for lush, chorus-like modulation textures
• Expression pedal support for real-time pitch control
• Balance control for blending dry and shifted signals
• External footswitch support for preset recalls and live control
• High-quality 24-bit AD / 32-bit DA conversion
• Adaptive Focus technology preserves clarity and feel
• Buffered bypass maintains strong, consistent signal integrity